Beto O'Rourke Is 'Fine' with Nike Boycott, 'Peaceful, Nonviolent Protest'

[[tmz:video id="0_zbe6tzle"]] Beto O'Rourke -- the congressman who went viral defending NFL kneelers -- says he's totally fine with people boycotting Nike ... because it's another form of nonviolent protest. Beto is currently in a very tight senate…